Clamp.



T. LUCIER.

CLAMP. APPLIGATION FILED SEPT. 14,' 1907.

Patented May 4, 1909.

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Patented May 4, 1909.

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THEOPHEILES LUOIER, OF

CLAMP.

Specification of Letters Patent. Patented May 4, 1909.

Serial No. 392,907.

Application filed September 14, k1907.

l that of the other member. One of these shanks, such as B, is provided with a looped bearing C for retaining the other shank, and which is so constructed that it may be cast integral with its shank, 0i the core. In detail, this bearing, as illustrated, is formed of a bifurcated portion, the furcations a b ol which are inclined obliquely from the shank, and are provided at their outer ends with a laterally extending portion c, preferably a connecting bar between the two furcations. Thus the bar c, which forms the retaining bearing for the opposite shank, is arranged between the open or cut away portion d between the two furcations, and consequently it may be cast without the usc of the core. The other shank A is provided at its end with a projecting lug l) for engaging any one of a series of notches c formed in the shank B. For retaining this lug in cngagement with the notch e, a yoked member D is provided which is sleeved over the parallel shanks A and B, and is provided with an inclined or wedge bearing f Vfor engaging a complementary wedge g on the shank A Thus when the yoke D is moved to engage these wedge bearings the lug l) will be retained for engaging with the particular notch c with which it is in registration. The yoke D is preferably of' the form shown, which is such that it may be cast without the use of a core, and is also provided with a greater width in that portion constituting the wedge f `than in the opposite bearings h These bearings are prefer. bly formed by inwardly projecting lugs on the sides t of the yoke, a space j being left between these lugs for engagement of the yoke with the shank B. To permit of engaging the yoke with the shank A recesses y" are formed in the shank B preierably adjacent to the bearing C thereof, these receiving the lugs 7L and permitting a movement of the yoke, so as to provide clearance for the insertion of the wedge g therethrough.

One of the Shanks, such as B, is provided with a laterally projecting jaw E, which is formed integral therewith, the other shank being provided with my improved clamping means which is of the following construction:

G is a laterally projecting round arm on the shank A.

I'I is a rotary member journaled upon this To all whom it may concern:

Be it known that I, TnnornnrLEs Lucien, a citizen of the United States of America, residing at Detroit, in the county of Viayne and State of Michigan, have invented certain new and useful Improvements in Clamps, of which the following is a specification, relierence being had therein to the accompanying drawings.

The invention relates to clamping devices, more particularly designed for foundrymens use, and consists in the construction as hereinafter set forth.,

In the drawings-Figure 1 is an elevation of the clamp, as applied to a molding Hask; Fig. 2 is a sectional elevation of the clamp; Fig. 3 is a longitudinal section through the adjoining ends el the members composing the clamp; Fig. 4 is an elevation of one of the members 3 and Fig. 5 is an elevation of the clamp provided with an extension member.

It is common foundry practice to lock the two parts of the molding flask together by the use of clamping bars having laterally projecting hooks at their opposite ends forengaging the upper and lower edges of the `Ilask. These bars must be of a length to loosely engage the flask sections when placed together, and to tighten the clamp the bar is turned at an angle by the use oi' a pinch bar or other tool for shifting one end thereof. In the practice, as above given, it is necessary to provide a large variety ol' sizes of clamps to fit the various lasks. Furthermore, in the tightening of the clamp by the method dcscribed the pinch bar injures the edge of the flask, which is usually formed of wood, so as j to decrease the life thereof.

It is the primary object of my invention to provide a clamp, which may be quickly adjusted to iit any size of flask within certain limits.

It is a further object to provide means for tightening the clamp without injury to the flask, and, further, to obtain a construction in which all of the members may be formed by single castings without the use oi cores, and without the necessity of any machine work, thereby producing an inexpensive construction.

My clampgcomprises essentially two members A andl each of which is provided with j a shank arranged parallel to and overlapping l and without the use Veration arm, and having a handle I by which it may be rotated. The member H projects so as to engage with the edge of the flask, and by then turning the handle I to rotate said member it will be caused to travel along said edge, until the bars A. and B are arranged at an angle, thereby producing a clamping effect. his is accomplished without any injury to the flask, as the member II merely rotates in contact therewith, and no tool is used which could injure the edge.

In order that this construction may be made by single castings, the member II is of a conical form to ermit of drawing from the sand and engaging a similar Shaped portion of the arm G. The parts are retained in en gagement by the handle member I, which is a'separate casting, and has a lipped portion J projecting behind a flange K on the arm G, as illustrated in Fig. 2. rIhe members II and are then secured together by a single bolt which passes through apertures formed in said members without the use of cores.

W ith the construction, as described, in opa clamp may be adjusted to nt any liask by merely slipping the yoke out of engagement with the wedge portion g of the shank A, which will permit `a sufficient lateral movement of said Shank to disengage the lug D from the notches e. The Shanks A and B may then be moved relatively until proper adjustment is obtained, after which the yoke is again moved to engage the bearings f with the wedge g.

,/Vhen properly adjusted, the clamp is engaged with the iiask while arranged perpendicular to the edges thereof, after which the operator turns the handle I to tighten the clamp, as before described. To hold the clampfrom accidental disengagement, I preferably form iattened portions 7c on the member II, as illustrated.

Where a clamp is needed of greater length than within the range of the adjustment of the members A and B, I provide an extension member L, one end of which iS provided with aY bearing U, similar to the bearing C, and the other end is similar in construction to the wedge portion of the shank A., which engages the yoke D. Between the two ends, this extension member is laterally off-set, as at M, so that when engaged with the members A and B the latter will be in the Same relative arrangement as when in engagement with each other, excepting for the interposition of the member L.

It will be observed that the furcations of the bearings C are offset at opposite sides of the shank, so as to provide draft for the intermediate bearings c, the latter being the full width of the shank.

What I claim as my invention is:

l. Avclamp comprising a pair of jaws, a conical bearing sleeved on one of said jaws,

and a handle secured to said bearing having a projecting lug for retaining it in its engagement with said jaw.

2Q An extensible clamp comprising a pair of overlapping Shanks, a loop-shaped member integral with one shank offset at one side thereof and extending laterally and beyond the end of said shank to form a retaining bearing for the overlapping shank, a member loosely sleeved upon said shanks, and means upon said Shanks co erating with said sleeved member for 10c `ng the Shanks 1n their adjusted positions.

3. An extensible clamp comprising a pair of overlapping shanks having substantially the Same cross section, an integral bearing at the end of one of the Shanks for retaining the other shank in parallelism therewith, said bearing comprising furcations offset at opposite sides of said shank and extending laterally beyond the end thereof and a connection portion, a member loosely sleeved upon said Shanks, and means upon said shanks coperating with said sleeved member for locking the shanks in their adjusted position.

4L. An extensible clampcoinprising a pair of overlapping Shanks, a lug on. one' of said Shanks for adjustably engaging a series of notches in the other shank, and a member sleeved upon said Shanks having a ,wedge engagement therewith for locking said lug in one of said notches.

5. An extensible clamp comprising a pair of Shanks adapted for overlapping engagement with each other, and an intermediate member having its opposite ends adapted for engagement with the respective Shanks and being offset intermediate said ends to arrange said Shanks, when in engagement therewith, in theV plane of their vengagement with each other'.

6. An extensible clamp comprising a pair of overlapping Shanks, a pair of parallel arms or jaws on said Shanks, a conical bearing sleeved on one of said jaws, an integral bearing at the end of one of Said Shanks for retaining the other Shank in parallelism therewith, said bearing comprising furcations offset at opposite Sides of Said Shank and extending laterally beyond the end thereof, and a connecting portion at the end of said furcations.

7. An extensible clamp, of overlapping Shanks of substantially the same cross-section, a lug on one of Said Shanks for adjustably engaging a Series of notches in the other shank, and a member loosely sleeved upon said Shanks, and means upon one of said Shanks lCooperating with Said member' for locking said lug in one of said notches.

'8. A clamp comprising a pair of jaws, a

comprising a pair handle secured to said bearing and means taining the same mits engagement with said Jaw.

In testimony whereof I aiix my signature 1n presence of two Witnesses.

THEOPHEILES LUCIER.

tnesses z NELLIE KINSELLA, JAMES I. BARRY. 

